The primary component of the central nervous system, which, along with the spinal cord, controls the body of bilaterally symmetrical beings.

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2answers
2k views

What “emotions” can a snake feel?

Short: Thinking in particular of a Royal Python (US: Ball Python) such as some people keep as exotic companion animals, what sorts of "emotions" or "feelings" are they capable of? Long: ...
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1answer
74 views

Deducing synaptic strength from electron micrographs?

There are several promising techniques for connectomics based on iterative sectioning and imaging of tissue with scanning electron microscopes (e.g. FIB-SEM and ATUM) By looking at such micrographs, ...
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1answer
97 views

How does the brain manifest and realize the intention to resist sleep?

The question title says it all. What happens in my brain when I resist sleep? I would appreciate explanations on neurotransmitter changes, what areas of the brain activate to resist sleep, what can an ...
1
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1answer
99 views

Biological implementation of convolutional neural networks

In computer science, 'convolutional neural networks' are used, that are meant to be inspired by biological network structures like found in the human brain visual cortex. In the computer ...
8
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0answers
101 views

Understanding the brain: how are neurotransmitters released in the brain?

I have a basic knowledge of how neural networks work. A potential difference is created that forces sodium, potassium, chloride, and calcium ions to flow which carries an electrical signal to the end ...
4
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0answers
379 views

Does breath-holding cause permanent brain damage?

My question is: Does voluntarily holding your breath at atmospheric pressure for a few minutes can cause brain damage? I'm talking about periods of time around 3 minutes. I've read there are some ...
4
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0answers
271 views

How do duplicate brain regions (ex: left/right amygdaloid body) operate together?

I frequently hear talk about parts of the brain like "Amygdala" or "Hypothalamus", so I looked them up in an app called "essential anatomy". What I see is that there's mirror symmetry, and most of ...
3
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0answers
21 views

Access and decay time of long-term memory

As for STM (short-term memory), access time is 70 ms and decay time is 200 ms. Is there any calculated time for LTM (long-term memory) also? And does LTM really decay with the passage of time?
3
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0answers
77 views

What is the biological basis of “energy” that extraverted humans draw from social engagements and introverts expend?

This question is related to this question about introverts becoming exhausted after extended social events on cognitive sciences stack exchange. As I read more on the topic of human ...
3
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0answers
165 views

When the mind is highly active, roughly how many neurons become excited in one second?

I'm curios to know how many times neurons send signals in one second when the brain is highly active (Highly active meaning during difficult problem solving, or any task that might bring the brain to ...
3
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0answers
61 views

TV's so loud when I turn over

Scenario: I'm about to fall asleep with the T.V. on. Having completely forgotten that it was, no longer even hearing it, just before falling asleep I turn over with a 'fresh' ear and it's blaring. If ...
3
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0answers
65 views

The Operation of tuning in the S1 layer of ventral model

According to my previous question in ventral Stream pathway and architecture, I want now to get a brief example about how the S1 layer is constructed. In other words, how all the simple units are ...
3
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0answers
74 views

Iron metabolism in the brain

I did an expression profiling from publicly available RNAseq data for mouse tissues. While for liver and testes I am getting expected proteins in the top highly expressed mRNAs, for brain I am getting ...
2
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0answers
8 views

Is there an evolutionary reason why so many white matter tracts decussate in the brainstem and spinal chord?

From a developmental perspective, I would tend to assume that it would be much simpler for the fibers descending from (for instance) the pyramidal tracts, superior cerebellar peduncles, or ascending ...
2
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0answers
24 views

Acetylcholine and muscles- excitatory or inhibitory? (muscle atonia and myasthenia gravis)

I have heard that acetylcholine can be excitatory or inhibitory, but I am confused as to which it is when it comes to muscles. On the one hand, I believe that muscle atonia during REM sleep is ...
2
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0answers
38 views

Thinking quickly causes elevated mood

I read this article: http://www.sciencedaily.com/releases/2006/09/060926171045.htm It says, "When people are made to think quickly, they report feeling happier as a result. They also say they are ...
2
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0answers
73 views

Is dysharmonia an actual disease or something only Oliver Sacks believes in?

In his book Musicophilia, Oliver Sacks discusses a case involving a woman named Rachel Y. who lost the ability to process harmony in a car accident. He then explains how this lead to simultanagnosia. ...
2
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0answers
70 views

Is it possible that weak memory is due to interference between signals in the brain?

"Weak memory", as used in this question, refers to the inability to retrieve a memory that a person otherwise knows he has memorized earlier. An example of this is some fact snippet that the ...
2
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0answers
1k views

Physiologically, how can stress/anxiety cause neuropathy?

According to the Mayo Clinic, stress/anxiety can cause "pins and needles" (neuropathy) sensations all over the body. But how can this be? My understanding of the sensory pathway is that sensory ...
2
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0answers
115 views

Does the Jungian notion of collective unconsciousness have any legitimacy in the light of modern neurobiology and epigenetics?

Carl Jung has long ago proposed a rather controversial notion of collective unconsciousness [1, 2, 3], a form of the unconscious (that part of the mind containing memories and impulses of which ...
2
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0answers
480 views

Does brain activity generate heat gradients in the brain?

I'm reading this article on guiding axon growth using temperature gradient, and it mentions that the trajectory of growth of neuron connections can be influenced by temperature gradients as little as ...
1
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0answers
5 views

Brain wave and motor movement correlation

I am trying to better understand which brain waves are generated when the motor system (arms, legs, muscles of any kind) are activated. According to Wikipedia, several types (Beta, Gamma, Mu) appear ...
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0answers
16 views

Atlas from human brain structures to 3D coordinates?

I would like to visualize specific human brain structures in the three dimensional space and compute specific geometric properties of these brain structures (size, centroid, etc). Therefore, I am ...
1
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0answers
26 views

How do Binaural Beats Work?

We have a project on different ways of relaxation. One way I found out was binaural beats. Could anyone please tell me how they work. You guys are masters when it comes to simplifying things! All I ...
1
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0answers
38 views

Of people who develop Alzheimer disease, are those people genetically predisposed to it?

I have read a lot lately about microbiological pathogens that are found in blood vessels in the brain of patient's with Alzheimer disease (positive association). So, I am confused whether there are ...
1
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0answers
14 views

Limits of brain neuronal spatial mapping

It is being claimed that brain maps the world space in (roughly) 1-to-1 correspondance of a place to a neuron (link1, link2). My question is: as the mapping happens in 1-to-1 manner, then is it ...
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0answers
24 views

Are there different types of communication and computation neurons?

I know from my basic education in neurology that the brain has various sorts of neurons. These are usually bunched into 3 different categories. I read in a recently published book including papers on ...
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0answers
41 views

Isotretinoin and retinoid receptors in brain confusion?

I am considering starting a treatment with Accutane(Isotretinoin), however I am not sure about what the effects on the brain are. Here are two studies that contradict each other: ...
1
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0answers
108 views

Dopamine and other neurotransmitter release during music listening

A rather non-technical question here. Im looking for any studies that show a positive curve in respects to music sessions in humans and neurotransmitter release (specifically dopamine, epinephrine, ...
1
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0answers
30 views

Would blue light be effective to help average people when sunsets come much earlier in the day?

I know people with SAD (Seasonal Affective Disorder) benefit from blue light in the winter as night-time comes much earlier (in the UK, sunset is around 4pm in December, compared to 9pm in June). ...
1
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0answers
27 views

Triune brain model

I have heard about the triune brain model in biology class, but my teacher does not know much about it. What I'm curious about, is this model accepted by most of the neuroscientists, or is it just a ...
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0answers
31 views

Systematic anticoagulant injection after a CVA

Since most of the cerebrovascular accident are ischemic ones, would it be usefull to have anticoagulant everywhere (we already have AEDs everywhere) so that everytime someone would have symptoms of a ...
0
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0answers
7 views

how to see prefrontal cortex works normally by a test?

Is there a test to see if the Prefrontal cortex of someone works normally? especially a simple test like a questionnaire that you give the individuals to fill out and based on their answer you obtain ...
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0answers
38 views

Supporting evidence to research paper

I am writing a research paper about the connection between age and active memory. I have been writing about the changes/development in grey and white matter, and in particular about synaptic pruning ...
0
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0answers
6 views

Is there a joint on a brain connecting both inner speech and outer speech sensation?

I'm interested of the neurophysiology of the inner speech/inner voice aka. auditory thinking. This question is similar to: What are the common neural circuitries between visual sensation and the ...
0
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0answers
21 views

How does the brain train its neural network?

One question that came up learning how artificial neural networks are working was how the brain can train its neural network? When we say we have an artificial neural network, the problem behind it ...
0
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0answers
37 views

Does recovery time after a concussion really prevent CTE in football players?

I just watched Concussion, which introduces the discovery of a brain disease called CTE due to head trauma, and in looking at the NFL's response to the issue of CTE, one of the primary solutions I saw ...
0
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0answers
27 views

Is there any evidence to suggest that exercise reduces the side effects of caffeine?

I heard a friend say: I'm not drinking coffee this week. My body can only process the caffeine if I run at least 15km a week. I found this claim fascinating - that exercise temporarily ...
0
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0answers
57 views

“synapses grow closer together in order to decrease the distance”, is it true?

Is there a source? That synapses get physically get close as their interaction increases. I have also read that where neurons crosses each other they create new neuron, is that true?
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0answers
33 views

Distribution of synaptic connections

What is the roughly the distribution of the various synaptic connections in the brain. Consider the following types: axoaxonic synapse between the axon of one neuron and the axon of another ...
0
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0answers
19 views

3D model - ant brain - precision and laboratory

I have some question. Is today's modern laboratory can perform high-resolution 3D model of the ant brain? This model would consist of a layer (sections 2D), which are made with a scanning electron ...
0
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0answers
17 views

What is the decision making process when a bird builds a nest?

I have been watching The Life of Birds and I am rather startled by the ingenuity some birds show in building their nests. For instance, one species built a dummy nest on top with a secret entrance ...